St. Thomas is a Catholic high school that prepares tomorrow's leaders by offering an academically challenging education in a wholesome, diverse environment.
Our ambitious students excel in academic and co-curricular programs and contribute to the school community and the wider community through service.
St Thomas promises its students a high school experience in a community that values their individual skills and talents.
St. Thomas further promises its students a commitment to prepare them for college and beyond by providing them the means to study, perform and have fun in a culture of shared academic and spiritual values.
Quick Facts (2026)
- Top-Ranked NH School
- Grades: 9-12
- Enrollment: 414 students
- Yearly Tuition: $16,100
- Acceptance rate: 100%
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
St. Thomas Aquinas High School ranks among the top 20% of private schools in New Hampshire for:
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 9-12
Year Founded
1960
Colors
White, Navy Blue
School Calendar
Last Day of School
Fri. May 1, 2026
Student Body
Total Students
414 students
Student Body Type
Co-ed
% Students of Color
7%
State avg.: 18%
Students by Grade
Academics and Faculty
Total Classroom Teachers
33 teachers
Student-Teacher Ratio
13:1
National avg.:
Average Class Size
15 students
Number of AP/Advanced Courses
12 courses
List of Courses Offered
Average SAT score
1186
(Out of 1600)
Average ACT score
25
(Out of 36)
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
$16,100
Acceptance Rate
100%
National avg.: 82%
Admissions Director
Daniel M. Richer, Ed.D.
Admissions Associate
Lisa Puffer
Application URL
Sports
Total Sports Offered
16 sports
School Notes
- School Mascot: Bernie Saint Bernard
- St. Thomas is a Catholic high school that prepares tomorrow's leaders by offering an academically challenging education in a wholesome, diverse environment. Our ambitious students excel in academic and co-curricular programs and contribute to the school community and the wider community through service. St Thomas promises its students a high school experience in a community that values their individual skills and talents. St. Thomas further promises its students a commitment to prepare them for college and beyond by providing them the means to study, perform and have fun in a culture of shared academic and spiritual values.
- Sample of notable school alumni/alumnae:
- Cody Morissette - Drafted by the Miami Marlins, professional baseball player
Source: Verified school update
Frequently Asked Questions
How much does St. Thomas Aquinas High School cost?
St. Thomas Aquinas High School's tuition is approximately $16,100 for private students.
What is the acceptance rate of St. Thomas Aquinas High School?
The acceptance rate of St. Thomas Aquinas High School is 100%, which is higher than the national average of 73%.
Who are famous alumni from St. Thomas Aquinas High School?
St. Thomas Aquinas High School famous alumni include: Cody Morissette - Drafted by the Miami Marlins, professional baseball player.
What sports does St. Thomas Aquinas High School offer?
St. Thomas Aquinas High School offers 16 interscholastic sports: Alpine Skiing, Baseball, Basketball, Cross Country, Diving, Field Hockey, Football, Golf, Ice Hockey, Lacrosse, Soccer, Softball, Swimming, Tennis, Track and Field and Volleyball. St. Thomas Aquinas High School is ranked as one of the top 20% of private schools in New Hampshire for most sports offered.
What is St. Thomas Aquinas High School's ranking?
St. Thomas Aquinas High School ranks among the top 20% of private schools in New Hampshire for: Largest student body and Most sports offered.
When is the application deadline for St. Thomas Aquinas High School?
The application deadline for St. Thomas Aquinas High School is rolling (applications are reviewed as they are received year-round).
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The nearest high school, elementary school and preschool to St. Thomas Aquinas High School is Portsmouth Christian Academy (1.3 miles away)
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Quick Facts
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School Reviews
5 10/28/2024
While your overview Of STA is accurate, there is information that needs updating: tuition cost, director of admissions, and the admissions associate. We love STA, the amazing faculty, education, after-school activities, and the Catholic experience!
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